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https://issues.apache.org/jira/browse/FLINK-13253?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jark Wu updated FLINK-13253:
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Affects Version/s: 1.9.0
> Deadlock may occur in JDBCUpsertOutputFormat
> --------------------------------------------
>
> Key: FLINK-13253
> URL: https://issues.apache.org/jira/browse/FLINK-13253
> Project: Flink
> Issue Type: Bug
> Components: Connectors / JDBC
> Affects Versions: 1.9.0
> Reporter: Jingsong Lee
> Assignee: Jingsong Lee
> Priority: Major
> Labels: pull-request-available
> Time Spent: 10m
> Remaining Estimate: 0h
>
> In close, it await the flush scheduler terminal, but it hold the lock of
> JDBCUpsertOutputFormat instance, maybe the async thread is waiting for this
> lock in the flush method, so there might be a deadlock here.
> First, it should not await scheduler terminal, because it has flushed all
> data to jdbc, what we should do is let async thread quit.
> Second, we should add lock outside the closed check in the flusher, in this
> way, we can ensure async thread secure exiting.
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